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staging: pi433: return -EFAULT if copy_to_user() fails

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copy_to_user() to user returns the number of bytes that weren't copied,
but we should be returning -EFAULT to the user.

Fixes: 874bcba65f ("staging: pi433: New driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
dan.carpenter@oracle.com
2017-07-19 12:51:40 +03:00
committed by Greg Kroah-Hartman
parent a7b1ba2355
commit 39ae5f1e4b
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/pi433/pi433_if.c
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@@ -689,7 +689,7 @@ pi433_read(struct file *filp, char __user *buf, size_t size, loff_t *f_pos)
{
retval = copy_to_user(buf, device->rx_buffer, bytes_received);
if (retval)
return retval;
return -EFAULT;
}
return bytes_received;